Composition for laying dust.



UNITED STATES Patented March 22, 1904.

ROBERT A. CHESEBROUGH, OF NEW YORK, N. Y.

COMPOSITION FOR LAYING DUST.

SPECIFICATION forming part of Letters Patent No. 755,357, dated March22, 1904.

Application filed J anriary 28, 1904. Serial No. 190,957. (No specimens)To all whom, it may concern;

Be it known that 1, ROBERT A. OHEsE- BROUGH, a citizen of the UnitedStates, and a resident of the borough of Manhattan, in the city andState of New York, have invented a new and useful Composition for LayingDust, of which the following is a specification.

My invention comprises a composition for laying dust consisting ofporous clay impregnated with petroleum or other oil.

The object of my invention is to provide a composition which may beapplied to the surfaces of road-beds of all kinds for the purpose oflaying the dust which tends to rise from traffic over said surface.

A further object of my invention is to provide a composition of theabove character in which the oil will be retained in the composition fora long time, withstanding the tendency of rain to wash the oil out ofthe clay, and thereby off the surface of the road-bed. In commonpractice where the oil is sprinkled upon the road-bed it will be almostimmediately washed ofi from the same by aheavy rain, the surface uponwhich the oil is applied being of such a nature as will permit the oilto wash down through the same rather than be impregnated therewith-as,for instance, the stone ballast of a railroad-bed.

My new composition is made up as follows: I provide a porous clay-such,for instance, as that commonly found in Florida or Georgiawhich clay Iimpregnate with a certain proportion of petroleum or other oil. Theproportion which I find to be very desirable is about twenty totwenty-five per cent. of petroleum or other oil.

When this composition is used upon railway road-beds, it should besprinkled thinly over the same. In actual practice I have found thatthis covering of composition effectually lays the dust and retains itsvalue for a long period in all kinds of weather; it being almostimpossible for rain to wash the oil out of the porous clay.

When the composition is used on ordinary dirt roads and race-tracks, itshould be evenly sprinkled over the surface of the road-bed and aroad-roller passed over the same.

What I claim as my invention is 1. A composition for laying dustconsisting of porous clay impregnated with petroleum or other oil.

2. A composition for laying dust consisting of porous clay impregnatedwith petroleum or other oil in substantially the proportions specified.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 23d day of J anuary, 1904.

ROBERT A. OHESEBROUGH.

